For a given time window both modes can occur simultaneously only close to the wave source or to a defect that leads to mode conversion.
For example, the method of the Timoshenko beam is required when the bending and shear modes of vibration occur simultaneously as in the sandwich beam.
Most existing numerical models are unable to reproduce these failure modes that may occur simultaneously or sequentially in a specimen, mainly due to difficulties in generating finite element meshes with a large number of randomly-oriented fibres.
The first one favors thermal effects and results in more rapid delivery of the desired energy, while non-thermal effects dominate in pulsate modes, even though these two effects occur simultaneously and can be influenced by the intensity adopted [6, 14, 24, 27].
First, graded and spiking signaling modes often occurred simultaneously in an individual terminal.
Three urban expansion modes (infilling, edge expanding, and leapfrogging) were observed to occur simultaneously along with a shift in their relative dominance, which reveals a spiraling urban process.
Four first-order ordinary differential equations are derived to describe the modulation of the amplitudes and the phases when principal parametric resonances of both modes and combination resonances of the additive and difference type occur simultaneously.
However, these two extreme numbers of operations cannot occur simultaneously, as the engine is either in mode PowerDown or PowerUp.
It is being used as model of the hemimetabolan mode of metamorphosis [22], [23], in which growth and maturation occur simultaneously throughout successively nymphal stages until the imaginal molt, without an intermediate pupal stage.
Various bacterial, viral, fungal and mycobacterial infections may occur simultaneously or sequentially and tissue sampling is often the only mode of conclusive diagnosis.
